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| - The rings 6, 12 can have a diameter of 10 mm to 50 mm for gastric reduction, but rings can also have a diameter from 3 mm to 150 mm.Closed rigid rings 6, 12 could be made of plastic, stainless steel, Nitinol, titanium, carbon fiber, or another like material which is compatible with biologic tissue.The suture can be made of any material, for example, a non-absorbable material such as polypropylene.
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